Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
$ in Millions
12 Months Ended
Nov. 30, 2017
Feb. 08, 2018
May 31, 2017
Document and Entity Information [Abstract]      
Entity Registrant Name Stellar Acquisition III Inc.    
Entity Central Index Key 0001665300    
Trading Symbol stlru    
Amendment Flag false    
Current Fiscal Year End Date --11-30    
Document Type 10-K    
Document Period End Date Nov. 30, 2017    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2017    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Smaller Reporting Company    
Entity Public Float     $ 71.7
Entity Common Stock, Shares Outstanding   9,010,177